Write down the atmic number of first 20 elements along with their names.
Answers
Answered by
2
- Hydrogen
- Helium
- Lithium
- Beryllium
- Boron
- Carbon
- Nitrogen
- Oxygen
- Flourine
- Neon
- Sodium
- Magnesium
- Alluminium
- Silicon
- Phosphorus
- Sulfur/sulphur
- Chlorine
- Argon
- Potassium
- Calcium
Similar questions